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B
Acidic K2Cr2O7
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C
Alkaline Na2Cr2O7
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D
MnO2
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Solution
The correct option is D Alkaline KMnO4 Alkaline KMnO4 is Baeyer's reagent. It is used to convert alkene into vicinal glycol (1,2-diol). CH2=CH2+H2O+[O]alkaline KMnO4−−−−−−−−−−→HO−CH2−CH2−OH